Lice on the head, you can use topical 50% 100 percent tincture or 25% benzyl benzoate emulsion, for scalp and hair rubbing, twice a day, for 3 days, after 3 days of using hot water soap for shampooing. Tincture of Bacopa monnieri has the efficacy of expelling wind and killing insects, and is mainly used for the treatment of itchy skin, head lice, pubic lice, body lice, scabies nodules, scabies, etc. Benzyl benzoate emulsion has the efficacy of treating scabies and anti-parasite, and can be used in the treatment of scabies, head lice, pubic lice and other treatments. During the use of drugs to treat head lice, you can not use your hands to touch the hair, if you accidentally touch the hair need to wash your hands in time. During the use of children, adults should do a good job of supervision, so as to avoid accidental ingestion of children. Head lice, mainly because usually do not pay attention to personal hygiene, it is recommended that every 2-3 days to wash the hair, can effectively prevent lice.